# Turn off the AC

**Published by:** [Brandon Donnelly](https://brandondonnelly.com/)
**Published on:** 2024-08-16
**Categories:** air-conditioning, energy-efficiency, environment, honeymoon, hotel-room, iot, mallorca, palma, palma-de-mallorca, smart-home, spain, sustainability, travel, window-sensors
**URL:** https://brandondonnelly.com/turn-off-the-ac

## Content

We just checked into our hotel in Palma and one of the first things I noticed is that as soon as you open any of the windows/doors, the AC automatically turns off. A message on the thermostat then alerts you that it will come back on once you close the windows. I haven't yet figured out how this particular hotel room is sensing that things are open, but it's relatively easy to do this at home through smart thermostats and sensors like these. I make a real concerted effort to do this manually, and so it's great to see it automated in a hotel room, where people are naturally going to care less about wastage. Europe is so far ahead of North America when it comes to energy efficiency.

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